Improved mode of fastening door-knobs to their spindles



v'tra auwhmttfmylwmm PATENT OFFICE.

DARrus sK'r-DMORE', orusENEeA rALLs, NEW YQRKQ rmrRoi/Eogl Moor or rAs'TrNme neon-Knots fro naarA sPmDLEs.

' ,Be it known that I, Draws salmone', ofA

, Seneca `Falls',-gi'x1'"the `1county ofi Seneca. and, vState of Neworkhave inventedanewanduseful Improvement in Eastening-the Shanks of Door-Knobs; and I dohereby declare. that the following is a full andexactdegeription I thereof, reference being had-,t0 theaocompa 1 nying drawings, making part offthis specilication.

ligurel is a cent-ral longitudinal section' of a door-knob" arranged ing-'my' improvedI manner, and applied to a dd0r;Fig. 2, a.k peli-` spective view of thev sleeve and its rose or flange that iits over. the shank'of the knob; Fig. 3, a view similar to Fig. 2, but showing a modilication of the sleeve and rose.-

Like letters designate corresponding paris in 'all the figures. 3 'Iherusnal way of securing the shank ofthe H`lknob to thespindle ythat passes through the door and operates the bbf'o'r l'ea'tclris' by" small screw that passes in through b oth to couple them together. By the continual ae- .lion of the knob in turning, the screw' .fre-

quently becomes 'loose and falls out, and is thus asource of great'annoyance. 4

1t is the object of my invention to obviate this diiculty by securing the shankand spiu- A die together-'iu such fa manner that they can never become uncoupled by accident.

As represented in the drawings, the general construction of the door-knob is as usual, consisting of hand-knobs A A, seeuredlto shanks B B, which are coupled to the spindle C, that passes through thedoor.- The usual holes, a a, are made in the spindle and afcorresponding one through the shank to receive a coupling-pin, b, which I employinstead o f the 'ordinary screw. lI use the following arrangement to retain this pin in place: Over the cylindrical shank (which turns therein) closely ts a'sleeve, D, of similar shape and of suitable'length, having on-its inner endl a rose or iiange, E, forminga part of jit, and by which itis secured to the door by screws c' c, as rep- 1 resented at the right hand inFig. 1, an'dgin Fig. 2.1,'Ihis sleeve hasa hole, d,l on? they same plane in cross-section with the hole a, in

1 which the couplingpin fits,'and of a size suficient to allow the pin' to drop through it. \Vhen this'pin 11 is Vto be inserted in place, the sleeve is placed over the shank and the hole, d therein brought. in position over the corre spending holes in the shank and thespindle. The coupling-pin is then dropped .through Specification forming part of Letters Patent No. 351,899., dateduly 15, 1862.

if-'Ianni nssrttufauuarsnecessitated, menu' on the shank a hltrevolutiori'tilt the hole l is' opposite the-.entrancejot-the pin, asA indinreybewmade separately, as representedetthef leftyhand1'in-Fig.1and iin Fige; Irlthis 1 casethe sleevel acts inde endeitlg1-yol"the rose,

andvhen the coupling-ptn, hsfbeen .inserted Ain itsplace' `it is turned around .tolfthe opposite position, and then-1 turnsonly withthe kob. VThe design-und useofythis mdi'iea`- tionof the sleeve 'are the sauieas that'at-,rst described-wiz, to retain the couplingfpin'nin place when o nce inserted; but I'prefer'the that the pin can never escape. Thus ar- 1 ranged; thereoupli ngrpi rris lalweysecurely held in position, and can be removed only by design. The necessity of a'screw is also ob viated,a plain pin perfectly answering the purpose, vand the cost of cutting a. screw! thread in the holein which the pints is avoided. The arrangement is simple and' cheap and easily applied. l

In order to remove thecoupling-pinb when desired, I make a hole,'f, of smaller size thanthe hole d, directly opposite it in the sleeve, and a correspondingly-small passage, g, from the bottom of the hole a to the outside of the shank. The rose is unscrewed from the door, and its position reversed from that represented in Fig. 1 and the pin driven out by a small point inserted from the under side. 'lhe pin b might extend entirely through from side lto side of the shank, if desired, the holes in the sleeve being arranged as above described, with the same e'ect. v v

What I claim-as my invention, and desire to secure by Letters Patent?, is'- The vsleeve D, .provided with a hole, d, either forming apart of or detached from the rose E, when the same is-usedY in connection in-place, arranged substantially-as herein described. l 1 i In witness whereof I have hereunto signed my name in the -presence of two subscribing witnesses.

Witnesses: DARIUS SKIDMORE.

J .'FRAsER, R. F. OsGooD.

yInstead ofhaviu'gthe sleeve Djanid. rose former arrangement, as it is cheaper and more effective, the sleeve and 'rose being cast `1n a smgle piece and retained in such a position with the shank B for holding the 'coupling-pin 

